metachar.c revision 1.3
1/* $NetBSD: metachar.c,v 1.3 2015/06/18 15:51:57 christos Exp $ */ 2 3/*- 4 * Copyright (c) 2015 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31#ifndef MAKE_NATIVE 32static char rcsid[] = "$NetBSD: metachar.c,v 1.3 2015/06/18 15:51:57 christos Exp $"; 33#else 34#include <sys/cdefs.h> 35#ifndef lint 36__RCSID("$NetBSD: metachar.c,v 1.3 2015/06/18 15:51:57 christos Exp $"); 37#endif /* not lint */ 38#endif 39 40#include "metachar.h" 41/* 42 * The following array is used to make a fast determination of which 43 * characters are interpreted specially by the shell. If a command 44 * contains any of these characters, it is executed by the shell, not 45 * directly by us. 46 * 47 * perhaps move it to ctype? 48 */ 49 50unsigned char _metachar[128] = { 51// nul soh stx etx eot enq ack bel 52 1, 0, 0, 0, 0, 0, 0, 0, 53// bs ht nl vt np cr so si 54 0, 1, 1, 0, 0, 0, 0, 0, 55// dle dc1 dc2 dc3 dc4 nak syn etb 56 0, 0, 0, 0, 0, 0, 0, 0, 57// can em sub esc fs gs rs us 58 0, 0, 0, 0, 0, 0, 0, 0, 59// sp ! " # $ % & ' 60 1, 1, 1, 1, 1, 0, 1, 1, 61// ( ) * + , - . / 62 1, 1, 1, 0, 0, 0, 0, 0, 63// 0 1 2 3 4 5 6 7 64 0, 0, 0, 0, 0, 0, 0, 0, 65// 8 9 : ; < = > ? 66 0, 0, 0, 1, 1, 0, 1, 1, 67// @ A B C D E F G 68 0, 0, 0, 0, 0, 0, 0, 0, 69// H I J K L M N O 70 0, 0, 0, 0, 0, 0, 0, 0, 71// P Q R S T U V W 72 0, 0, 0, 0, 0, 0, 0, 0, 73// X Y Z [ \ ] ^ _ 74 0, 0, 0, 1, 1, 1, 1, 0, 75// ` a b c d e f g 76 1, 0, 0, 0, 0, 0, 0, 0, 77// h i j k l m n o 78 0, 0, 0, 0, 0, 0, 0, 0, 79// p q r s t u v w 80 0, 0, 0, 0, 0, 0, 0, 0, 81// x y z { | } ~ del 82 0, 0, 0, 1, 1, 1, 1, 0, 83}; 84